KERNELDIR= /home/liutao/linux-imx6ull/linux-imx-rel_imx_4.1.15_2.1.0_ga/
CURRENT_PATH := $(shell pwd)
obj-m := led_drv.o

build: kernel_modules

kernel_modules:
	$(MAKE) -C $(KERNELDIR) M=$(CURRENT_PATH) modules
clean:
	$(MAKE) -C $(KERNELDIR) M=$(CURRENT_PATH) clean

